US7077811B2ExpiredUtilityA1

Guidewire tip construction

73
Assignee: SCIMED LIFE SYSTEMS INCPriority: Dec 23, 2002Filed: Dec 23, 2002Granted: Jul 18, 2006
Est. expiryDec 23, 2022(expired)· nominal 20-yr term from priority
Inventors:Anthony C. VrbaBrian R. ReynoldsBrice Shireman
A61M 2025/09083A61M 25/09A61M 2025/09175
73
PatentIndex Score
46
Cited by
42
References
40
Claims

Abstract

Guidewire with an improved distal end. A guidewire with an improved distal end may include a core wire, a solder tip disposed at a distal end of the core wire, a radiopaque inner coil coupled to the distal end of the core wire, an outer coil disposed along the length of the core wire, and a distal hub coupled to the core wire and disposed proximate a distal end of the inner coil.

Claims

exact text as granted — not AI-modified
1. A guidewire, comprising:
 an elongate shaft having a length, a proximal end and a distal end; 
 a tip disposed at the distal end of the shaft; 
 a radiopaque inner coil coupled to the distal end of the shaft, the inner coil having a proximal end and a distal end; 
 an outer coil disposed along the length of the shaft, the outer coil having a proximal end and a distal end; 
 a distal hub coupled to the shaft and disposed proximate the distal end of the inner coil; and 
 further comprising a proximal hub coupled to the shaft. 
 
     
     
       2. The guidewire in accordance with  claim 1 , wherein the shaft is comprised of stainless steel. 
     
     
       3. The guidewire in accordance with  claim 1 , wherein the shaft is comprised of nickel-titanium alloy. 
     
     
       4. The guidewire in accordance with  claim 1 , wherein the shaft is comprised of a composite of nickel-titanium alloy and stainless steel. 
     
     
       5. The guidewire in accordance with  claim 1 , wherein the inner coil is comprised of platinum. 
     
     
       6. The guidewire in accordance with  claim 1 , wherein the inner coil is comprised of gold. 
     
     
       7. The guidewire in accordance with  claim 1 , wherein the inner coil is comprised of tungsten alloy. 
     
     
       8. The guidewire in accordance with  claim 1 , wherein the outer coil is comprised of stainless steel. 
     
     
       9. The guidewire in accordance with  claim 1 , wherein the outer coil is comprised of nickel-titanium alloy. 
     
     
       10. The guidewire in accordance with  claim 1 , wherein the distal end of the outer coil is coupled to the tip. 
     
     
       11. The guidewire in accordance with  claim 1 , wherein the proximal end of the inner coil is coupled to the shaft. 
     
     
       12. The guidewire in accordance with  claim 1 , wherein the outer coil further comprises a proximal section that is coupled to the shaft. 
     
     
       13. The guidewire in accordance with  claim 1 , wherein the proximal hub is comprised of polytetrafluoroethylene. 
     
     
       14. The guidewire in accordance with  claims 1 , wherein the proximal hub prevents the inner coil from moving proximally relative to the shaft. 
     
     
       15. The guidewire in accordance with  claim 1 , further comprising a ribbon coupled to the shaft and extending between the shaft and the tip. 
     
     
       16. The guidewire in accordance with  claim 1 , wherein the outer coil is wound about the shaft in a first direction and the inner coil is wound about the shaft in a second direction, and wherein the first direction is substantially opposite of the second direction. 
     
     
       17. The guidewire in accordance with  claim 1 , wherein the inner coil is coupled to the outer coil. 
     
     
       18. A guidewire, comprising:
 an elongate shaft having a length, a proximal end and a distal end; 
 a tip disposed at the distal end of the shaft; 
 a radiopaque inner coil coupled to the distal end of the shaft, the inner coil having a proximal end and a distal end; 
 an outer coil disposed along the length of the shaft, the outer coil having a proximal end and a distal end; 
 a distal hub coupled to the shaft and disposed proximate the distal end of the inner coil; and 
 wherein the distal hub is comprised of polytetrafluoroethylene. 
 
     
     
       19. A guidewire, comprising:
 an elongate shaft having a length, a proximal end and a distal end; 
 a tip disposed at the distal end of the shaft; 
 a radiopaque inner coil coupled to the distal end of the shaft, the inner coil having a proximal end and a distal end; 
 an outer coil disposed along the length of the shaft, the outer coil having a proximal end and a distal end; 
 a distal hub coupled to the shaft and disposed proximate the distal end of the inner coil; 
 further comprising a ribbon coupled to the shaft and extending between the shaft and the tip; and 
 further comprising a connector disposed adjacent a joining portion of the shaft and the ribbon. 
 
     
     
       20. A guidewire, comprising:
 an elongate shaft having a length, a proximal end and a distal end; 
 a tip disposed at the distal end of the shaft; 
 a radiopaque inner coil coupled to the distal end of the shaft, the inner coil having a proximal end and a distal end; 
 an outer coil disposed along the length of the shaft, the outer coil having a proximal end and a distal end; 
 a distal hub coupled to the shaft and disposed proximate the distal end of the inner coil; 
 wherein the inner coil is coupled to the outer coil; and 
 wherein the outer coil includes a first increased pitch region, and wherein the inner coil and the outer coil are coupled adjacent the first increased pitch region. 
 
     
     
       21. The guidewire in accordance with  claim 20 , wherein the inner coil includes a second increased pitch region, and wherein the inner coil and the outer coil are coupled adjacent the second increased pitch region. 
     
     
       22. A guidewire, comprising:
 an elongate shaft having a length, a proximal end and a distal end; 
 a solder tip disposed at the distal end of the shaft; 
 a radiopaque inner coil coupled to the distal end of the shaft, the inner coil having a proximal end and a distal end; 
 an outer coil disposed along the length of the shaft, the outer coil having a proximal end and a distal end; 
 a distal hub coupled to the shaft and disposed proximate the distal end of the inner coil; and 
 a proximal hub coupled to the shaft and disposed proximate the proximal end of the inner coil. 
 
     
     
       23. The guidewire in accordance with  claim 22 , wherein the shaft is comprised of stainless steel. 
     
     
       24. The guidewire in accordance with  claim 22 , wherein the shaft is comprised of nickel-titanium alloy. 
     
     
       25. The guidewire in accordance with  claim 22 , wherein the shaft is comprised of a composite of nickel-titanium alloy and stainless steel. 
     
     
       26. The guidewire in accordance with  claim 22 , wherein the inner coil is comprised of platinum. 
     
     
       27. The guidewire in accordance with  claim 22 , wherein the inner coil is comprised of gold. 
     
     
       28. The guidewire in accordance with  claim 22 , wherein the inner coil is comprised of tungsten alloy. 
     
     
       29. The guidewire in accordance with  claim 22 , wherein the outer coil is comprised of stainless steel. 
     
     
       30. The guidewire in accordance with  claim 22 , wherein the outer coil is comprised of nickel-titanium alloy. 
     
     
       31. The guidewire in accordance with  claim 22 , wherein the distal end of the outer coil is coupled to the solder tip. 
     
     
       32. The guidewire in accordance with  claim 22 , wherein the proximal end of the inner coil is coupled to the shaft. 
     
     
       33. The guidewire in accordance with  claim 22 , wherein the outer coil further comprises a proximal section that is coupled to the shaft. 
     
     
       34. The guidewire in accordance with  claim 22 , wherein the distal hub is comprised of polytetrafluoroethylene. 
     
     
       35. The guidewire in accordance with  claim 22 , wherein the proximal hub is comprised of polytetrafluoroethylene. 
     
     
       36. The guidewire in accordance with  claim 34 , wherein the proximal hub prevents the inner coil from moving proximally relative to the shaft. 
     
     
       37. The guidewire in accordance with  claim 22 , wherein the outer coil is wound about the shaft in a first direction and the inner coil is wound about the shaft in a second direction, and wherein the first direction is substantially opposite of the second direction. 
     
     
       38. The guidewire in accordance with  claim 22 , wherein the inner coil is coupled to the outer coil. 
     
     
       39. The guidewire in accordance with  claim 38 , wherein the outer coil includes a first increased pitch region, and wherein the inner coil and the outer coil are coupled adjacent the first increased pitch region. 
     
     
       40. The guidewire in accordance with  claim 39 , wherein the inner coil includes a second increased pitch region, and wherein the inner coil and the outer coil are coupled adjacent the second increased pitch region.

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